Roofing or surfacing material



y 13, 1947- s. L. EASON 2,420,421

ROOFING OR SURFACING MATERIAL Original Filed July 4, 1942 18w g R 10 11Wne In van for Sidn e L. Eason A fforneys Patented May 13, 1947 UNIEDTES ATENT GFFICE Continuation of application Serial No. 449,747, July 4,1942. This application September 14, 1944, Serial No. 554,076

1 Claim. 1

This invention relates to roofing or surfacing materials and is acontinuation of my application Serial No. 449,747, filed July 4, 1942.

In the drawing the single figure is a fragmentary section through thejoint produced when related courses of roofing or surfacing materialequipped in accordance with one embodiment of my invention are broughttogether in joint-forming relationship.

Related courses of roofing or surfacing material Ill and l I,respectively, are shown as disposed in joint-forming relationship andnailed as at I2.

I apply to the adjacent longitudinal edges of the courses I and IIrelatively narrow areas of coating substance I1 and [8, respectively.Such coating substance may be a liquid which, on drying, developsadhesive-cohesive properties when brought into joint-forming contactwith similarly treated surfaces but will not adhere to any surface notsimilarly treated, or it may be a semiplastic or other spreadablecoating composition with the same characteristics. As examples of suchsubstance, I mention the rubber or rubberlike coating compositionscommonly used in the so-called friction tape, or the latex coatingcomposition sold under the trade-mark Vultex. However, any othercomposition having the aforesaid properties may be used. These areas maybe in the form of impregnated or treated strips or tapes or the treatingsubstance may be applied directly to the edges or vicinity of the edgesof the courses as brushed-on stripes. In either case, the joint may besealed and the nail heads covered by a superimposed cover strip 19 ofany suitable material, as fabric or its equivalent, which has beenimpregnated or treated with a similar coating substance. Strip I9 issubstantially coextensive with areas I! and I8 and when pressed intointimate contact therewith forms the sealed joint depicted in thedrawing.

Various modifications in structure or materials are to be regarded aswithin the purview of my invention if within the limits of the appendedclaim.

What I therefore claim and desire to secure by Letters Patent is:

Roofing or surfacing, comprising overlapping sheets of material, stripsof material different from the sheets themselves applied to the exposedfaces of said sheets, said strips being characterized in that theypossess adhesive-cohesive ailinity for similar strips or treatedsurfaces but will not adhere to dissimilar surfaces, the strip on theupper sheet extending longitudinally of said sheet along the marginaledge of said sheet with its outer edge flush with the outer edge of saidsheet, the strip on the lower sheet extending longitudinally of saidsheet but being inset from the marginal edge of said sheet a distanceequal to the distance that the lower sheet is overlapped by the uppersheet so that when the sheets are in overlapped joint-formingrelationship the outer edge of the upper sheet abuts the inner edge ofsaid last-named strip, a nail extending through said first-named stripand through the overlapping portions of said sheets, and a cover stripsubstantially coextensive with said pair of strips and covering the headof said nail, the inner surface of said cover strip havingadhesive-cohesive afiinity for the outer surfaces of said pair of stripsand for the outer edge of the first-named strip and closely contactingsaid outer surfaces, said outer edge, and the outer edge of the uppersheet which is exposed between said pair of strips to provide therewitha, weather-tight joint.

SIDNEY LANIER EASON.

REFERENCES CETED The following references are of record in the file ofthis patent:

UNITED STATES PA'IEN TS Number Name Date 2,210,209 Kirschbraun Aug. 6,1940 2,241,053 Eason May 6, 1941 2,215,349 Eason Sept. 17, 1940

